package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {
    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void autoFillPointCut(){}

    @Before("autoFillPointCut()")
    public void autoFill(JoinPoint joinPoint){
        log.info("开始进行数据填充");
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        AutoFill annotation = signature.getMethod().getAnnotation(AutoFill.class);
        OperationType value = annotation.value();

        Object[] args = joinPoint.getArgs();
        if (args == null || args.length == 0){
            return;
        }
        Object object = args[0];

        LocalDateTime now = LocalDateTime.now();
        Long currentId = BaseContext.getCurrentId();

        if (value == OperationType.INSERT){
            try {
                Method setUpdateTime = object.getClass().getMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setcreateTime= object.getClass().getMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                Method setcreateuser = object.getClass().getMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
                Method setupdateuser = object.getClass().getMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);

                setUpdateTime.invoke(object, now);
                setcreateTime.invoke(object, now);
                setcreateuser.invoke(object, currentId);
                setupdateuser.invoke(object, currentId);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        } else if (value == OperationType.UPDATE) {
                try {
                    Method setUpdateTime = object.getClass().getMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                    Method setupdateuser = object.getClass().getMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);

                    setUpdateTime.invoke(object, now);
                    setupdateuser.invoke(object, currentId);
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
        }
    }
}
